You dont need forged pistions with a holset and 14psi. Im runing it right now Im saving up for a set right now but im looking for way more than 14psi. Im just running this engine till i can build a nice one. Bigphil is running like 26psi on a stock motor and head with meth injection. So if thats as high of boost as you plan on running. i personally would save the money..